3v4l.org

run code in 300+ PHP versions simultaneously
<?php class X {} class Y extends X {} class A { function f(Y $y) {} } class B extends A { function f(X $x) {} }

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.40.0110.00418.71
8.3.30.0030.01518.42
8.3.20.0040.00420.14
8.3.10.0000.00823.78
8.3.00.0040.00423.38
8.2.170.0120.00422.96
8.2.160.0170.00320.39
8.2.150.0090.00024.18
8.2.140.0000.00824.66
8.2.130.0100.00321.00
8.2.120.0050.00226.35
8.2.110.0030.00619.32
8.2.100.0120.00017.78
8.2.90.0050.00319.13
8.2.80.0040.00417.97
8.2.70.0000.00817.50
8.2.60.0040.00417.68
8.2.50.0030.00618.07
8.2.40.0080.00022.33
8.2.30.0000.00719.18
8.2.20.0100.00017.55
8.2.10.0040.00417.91
8.2.00.0040.00417.77
8.1.270.0160.00322.14
8.1.260.0080.00028.09
8.1.250.0000.00728.09
8.1.240.0060.00321.24
8.1.230.0080.00417.42
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0030.00717.09
8.1.190.0080.00017.10
8.1.180.0040.00418.10
8.1.170.0040.00418.50
8.1.160.0040.00420.66
8.1.150.0000.00820.53
8.1.140.0040.00419.43
8.1.130.0030.00317.48
8.1.120.0040.00417.34
8.1.110.0030.00517.25
8.1.100.0040.00417.23
8.1.90.0040.00417.32
8.1.80.0040.00417.29
8.1.70.0030.00317.35
8.1.60.0070.00017.38
8.1.50.0000.00817.34
8.1.40.0000.00817.46
8.1.30.0000.00917.37
8.1.20.0000.00717.48
8.1.10.0050.00417.38
8.1.00.0040.00417.29
8.0.300.0070.00018.77
8.0.290.0070.00016.58
8.0.280.0070.00018.31
8.0.270.0000.00817.04
8.0.260.0000.00617.08
8.0.250.0000.00716.74
8.0.240.0030.00716.70
8.0.230.0040.00416.88
8.0.220.0080.00016.80
8.0.210.0040.00416.73
8.0.200.0000.00916.84
8.0.190.0050.00216.86
8.0.180.0030.00316.79
8.0.170.0070.00016.80
8.0.160.0000.00716.80
8.0.150.0070.00016.71
8.0.140.0030.00316.68
8.0.130.0000.00613.25
8.0.120.0040.00416.75
8.0.110.0040.00416.77
8.0.100.0040.00416.80
8.0.90.0040.00316.54
8.0.80.0060.01516.74
8.0.70.0080.00016.78
8.0.60.0050.00316.63
8.0.50.0040.00416.70
8.0.30.0120.00816.90
8.0.20.0110.01017.40
8.0.10.0040.00416.75
8.0.00.0100.00716.55
7.4.330.0020.00216.73
7.4.320.0030.00316.39
7.4.300.0000.00816.41
7.4.290.0000.00716.44
7.4.280.0070.00016.46
7.4.270.0030.00316.28
7.4.260.0040.00416.40
7.4.250.0030.00316.36
7.4.240.0040.00416.46
7.4.230.0000.00716.41
7.4.220.0090.00916.41
7.4.210.0100.00516.37
7.4.200.0030.00316.35
7.4.160.0090.00616.41
7.4.150.0070.01017.40
7.4.140.0070.01117.86
7.4.130.0060.01116.20
7.4.120.0060.01016.39
7.4.110.0110.00516.42
7.4.100.0090.00616.39
7.4.90.0180.00016.49
7.4.80.0040.01119.39
7.4.70.0160.00416.23
7.4.60.0090.01316.20
7.4.50.0000.01116.20
7.4.40.0070.01116.49
7.4.30.0160.00616.35
7.4.00.0000.01714.71
7.3.330.0000.00513.15
7.3.320.0000.00513.07
7.3.310.0000.00716.29
7.3.300.0000.00616.27
7.3.290.0000.00716.11
7.3.280.0120.00616.23
7.3.270.0070.01017.40
7.3.260.0090.00916.37
7.3.250.0100.01016.27
7.3.240.0120.00616.30
7.3.230.0030.01316.39
7.3.210.0040.01516.30
7.3.200.0160.00619.39
7.3.190.0130.00316.13
7.3.180.0030.01316.29
7.3.170.0160.00616.27
7.3.160.0050.01116.17
7.2.330.0140.01116.25
7.2.320.0090.00916.42
7.2.310.0100.01316.33
7.2.300.0120.01216.49
7.2.290.0160.00316.44
7.2.60.0060.00916.51
7.2.00.0060.00919.21
7.1.200.0050.00315.73
7.1.100.0030.01017.90
7.1.70.0100.00317.13
7.1.60.0070.01719.40
7.1.50.0100.00016.92
7.1.00.0030.07722.45
7.0.200.0530.00714.36
7.0.60.0170.07321.73
7.0.50.0070.04717.82
7.0.40.0030.05320.10
7.0.30.0330.07720.25
7.0.20.0130.04720.25
7.0.10.0030.09320.08
7.0.00.0030.04320.31
5.6.280.0030.03321.11
5.6.210.0000.04720.66
5.6.200.0030.08318.29
5.6.190.0000.06020.61
5.6.180.0500.06020.61
5.6.170.0200.09020.51
5.6.160.0000.04720.55
5.6.150.0030.07718.14
5.6.140.0000.05318.19
5.6.130.0070.07718.21
5.6.120.0130.07320.99
5.6.110.0000.07720.97
5.6.100.0030.08721.12
5.6.90.0030.09320.98
5.6.80.0100.06320.52
5.5.350.0300.07020.33
5.5.340.0070.08017.96
5.5.330.0030.05020.13
5.5.320.0300.06720.36
5.5.310.0370.07020.24
5.5.300.0100.08318.04
5.5.290.0100.03717.99
5.5.280.0130.04720.77
5.5.270.0070.06320.84
5.5.260.0130.03320.84
5.5.250.0070.04020.67
5.5.240.0230.04320.16

preferences:
52.63 ms | 400 KiB | 5 Q